diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/vocabulary/Term.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/vocabulary/Term.java
deleted file mode 100644
index b5ac18169..000000000
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/vocabulary/Term.java
+++ /dev/null
@@ -1,53 +0,0 @@
-
-package eu.dnetlib.dhp.transformation.vocabulary;
-
-import java.io.Serializable;
-
-public class Term implements Serializable {
-
-	private String englishName;
-	private String nativeName;
-	private String encoding;
-	private String code;
-	private String synonyms;
-
-	public String getEnglishName() {
-		return englishName;
-	}
-
-	public void setEnglishName(String englishName) {
-		this.englishName = englishName;
-	}
-
-	public String getNativeName() {
-		return nativeName;
-	}
-
-	public void setNativeName(String nativeName) {
-		this.nativeName = nativeName;
-	}
-
-	public String getEncoding() {
-		return encoding;
-	}
-
-	public void setEncoding(String encoding) {
-		this.encoding = encoding;
-	}
-
-	public String getCode() {
-		return code;
-	}
-
-	public void setCode(String code) {
-		this.code = code;
-	}
-
-	public String getSynonyms() {
-		return synonyms;
-	}
-
-	public void setSynonyms(String synonyms) {
-		this.synonyms = synonyms;
-	}
-}
diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/vocabulary/Vocabulary.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/vocabulary/Vocabulary.java
deleted file mode 100644
index a9da6b725..000000000
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/vocabulary/Vocabulary.java
+++ /dev/null
@@ -1,54 +0,0 @@
-
-package eu.dnetlib.dhp.transformation.vocabulary;
-
-import java.io.Serializable;
-import java.util.List;
-
-public class Vocabulary implements Serializable {
-
-	private String id;
-	private String name;
-	private String description;
-	private String code;
-	private List<Term> terms;
-
-	public String getId() {
-		return id;
-	}
-
-	public void setId(String id) {
-		this.id = id;
-	}
-
-	public String getName() {
-		return name;
-	}
-
-	public void setName(String name) {
-		this.name = name;
-	}
-
-	public String getDescription() {
-		return description;
-	}
-
-	public void setDescription(String description) {
-		this.description = description;
-	}
-
-	public String getCode() {
-		return code;
-	}
-
-	public void setCode(String code) {
-		this.code = code;
-	}
-
-	public List<Term> getTerms() {
-		return terms;
-	}
-
-	public void setTerms(List<Term> terms) {
-		this.terms = terms;
-	}
-}
diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/vocabulary/VocabularyHelper.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/vocabulary/VocabularyHelper.java
deleted file mode 100644
index 10e959be0..000000000
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/vocabulary/VocabularyHelper.java
+++ /dev/null
@@ -1,24 +0,0 @@
-
-package eu.dnetlib.dhp.transformation.vocabulary;
-
-import java.io.Serializable;
-import java.net.URL;
-import java.nio.charset.Charset;
-
-import org.apache.commons.io.IOUtils;
-
-import com.fasterxml.jackson.databind.ObjectMapper;
-
-public class VocabularyHelper implements Serializable {
-
-	private static final String OPENAIRE_URL = "http://api.openaire.eu/vocabularies/%s.json";
-
-	public static Vocabulary getVocabularyFromAPI(final String vocabularyName) throws Exception {
-		final URL url = new URL(String.format(OPENAIRE_URL, vocabularyName));
-
-		final String response = IOUtils.toString(url, Charset.defaultCharset());
-		final ObjectMapper jsonMapper = new ObjectMapper();
-		final Vocabulary vocabulary = jsonMapper.readValue(response, Vocabulary.class);
-		return vocabulary;
-	}
-}
diff --git a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/vocabulary/VocabularyTest.java b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/vocabulary/VocabularyTest.java
deleted file mode 100644
index 1ae942a6b..000000000
--- a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/vocabulary/VocabularyTest.java
+++ /dev/null
@@ -1,16 +0,0 @@
-
-package eu.dnetlib.dhp.transformation.vocabulary;
-
-import static org.junit.jupiter.api.Assertions.*;
-
-import org.junit.jupiter.api.Test;
-
-public class VocabularyTest {
-
-	@Test
-	public void testLoadVocabulary() throws Exception {
-
-		final Vocabulary vocabulary = VocabularyHelper.getVocabularyFromAPI("dnet:languages");
-		assertEquals("dnet:languages", vocabulary.getName());
-	}
-}